"I should have had better information before jumping to that conclusion." SHOULD HAVE indicates that something was expected, but didn't happen. SHOULD HAVE HAD indicates a better outcome could or...
should have: You should use should have in a sentence as past tense like "You should have done your chores." I agree with that as: This is used when you are talking about an event that took place...
Should Declare War The timing of the United States entering the "Great War" (to be later called World War I) came at a time when our political leaders realized that our world is becoming smaller....